CN210016467U

CN210016467U - LY-I type motor train unit vehicle-mounted antenna diagnostic instrument

Info

Publication number: CN210016467U
Application number: CN201921600624.1U
Authority: CN
Inventors: 刘洋; 刘伟玲; 王丹; 邓丽娟; 陈强; 谢耀元; 刘毅松; 温运发
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-02-04
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a LY-I type EMUs vehicle antenna diagnostic apparatus, it contains GSM-R radio frequency signal module, GSM-R radio frequency control module, GPS detection module, 4-bit half ampere meter, radio frequency biaser and LNA current detection module; the LNA current detection module is electrically connected with the GSM-R radio frequency control module and the GPS detection module respectively; the GSM-R radio frequency control module is electrically connected with the GSM-R radio frequency signal module and the GSM-R radio frequency interface in sequence; the GPS detection module, the 4-bit semi-ammeter, the radio frequency bias device and the GPS radio frequency interface are electrically connected in sequence; when the utility model is used for processing the vehicle-mounted GPS time service fault of the motor train unit, the GPS antenna and the LAN amplifier do not need to be replaced at the same time after the fault of the antenna side is judged, so that the cost is saved; the situation that which antenna is arranged on the roof cannot be clearly distinguished when the GPRS of the motor train unit fails and the antenna needs to be replaced is avoided, and labor and fault processing time are saved.

Description

LY-I type motor train unit vehicle-mounted antenna diagnostic instrument

Technical Field

The utility model relates to a railway traffic field, concretely relates to LY-I type EMUs vehicle antenna diagnostic instrument.

Background

With the rapid development of high-speed rails in China, driving certificates of a high-speed motor train unit with the speed of 350km/h are mainly transmitted through a wireless network, and a vehicle-mounted antenna plays a vital role. In the equipment maintenance process, no special instrument is used for judging the faults of the vehicle-mounted antenna side and the vehicle-mounted host side at present, and extreme inconvenience is brought to maintenance. When CTCS-3-level train control vehicle-mounted equipment is processed, two types of faults are encountered, one is a GPS time service fault, and the other is a wireless timeout fault. The first method is to judge the fault of the GPS time service system of the vehicle-mounted equipment when the ATP time of the motor train unit is inconsistent with the Beijing time and cannot be modified. How to judge whether the vehicle-mounted antenna side or the time service host machine has a fault is an alternative method at present, a time service host machine is complexly replaced, a large amount of time is spent, and if the time service host machine has a fault, the host machine is replaced. If the vehicle-mounted antenna side fails, two failure points exist, namely the failure of the antenna receiving part and the failure of the LNA amplifier. Without the utility model discloses unable pinpointing in scene before LY-I type EMUs vehicle antenna diagnostic instrument all is the whole changes of vehicle antenna and LAN usually, extravagant cost and labour. And the fault point can be easily found by the vehicle-mounted antenna diagnostic instrument. We have used it to test the replaced LANs in the earlier stage, and find that a plurality of replaced LANs work well and are put into use again, which can save cost. The second is GPRS communication failure, and the vehicle-mounted antenna needs to be replaced. 2 vehicle-mounted antennas of the motor train unit are mounted on the roof and have the same function, and workers can freely connect a main machine side cable to penetrate into the motor train unit from the roof when leaving the motor train unit, so that roots cannot be found. The method of adopting the lottery mode is that an antenna is arbitrarily selected on the top of the motor train unit to be replaced, only after the very reliable sealing measure of the top of the motor train unit is damaged, the faulty antenna can be searched in a cable short circuit mode, one antenna is disassembled and assembled for 4 hours, and the time spent on disassembling the antenna by mistake is 4 hours. In order to solve the problems that the two faults can be quickly searched and positioned and reduce labor and cost, a LY-I type motor train unit vehicle-mounted antenna diagnostic device is developed to solve the practical difficulty in field maintenance of the motor train unit.

Disclosure of Invention

An object of the utility model is to prior art's defect and not enough, provide a LY-I type EMUs vehicle antenna diagnostic device that simple structure, reasonable in design, convenient to use and portable.

In order to achieve the above object, the utility model adopts the following technical scheme: the device comprises a GSM-R radio frequency signal module, a GSM-R radio frequency control module, a GPS detection module, a 4-bit semi-ammeter, a radio frequency bias device and an LNA current detection module; the LNA current detection module is electrically connected with the GSM-R radio frequency control module and the GPS detection module respectively; the GSM-R radio frequency control module is in control connection with the GSM-R radio frequency signal module; the GSM-R radio frequency signal module is electrically connected with the GSM-R radio frequency interface; the GPS detection module is electrically connected with the radio frequency biaser; the 4-bit semi-ammeter is connected in series between the GPS detection module and the radio frequency biaser; the radio frequency bias device is electrically connected with the GPS radio frequency interface.

Furthermore, the LNA current detection module comprises a low-ripple power supply module, a battery power display, a lithium battery and a lithium battery charging module; the low-ripple power supply module, the lithium battery and the battery electric quantity display are connected in series, and the lithium battery charging module is electrically connected with the lithium battery;

furthermore, the system also comprises a GPS power switch and a GSM-R power switch; the GPS power switch is used for controlling the opening or closing of the GSM-R radio frequency; the GSM-R power switch is used for controlling the opening or closing of the GPS detection.

After the structure is adopted, the utility model discloses beneficial effect does: the LY-I type motor train unit vehicle-mounted antenna diagnostic instrument of the utility model has the advantages that when the motor train unit vehicle-mounted GPS time service fault is processed, the time service host does not need to be replaced by adopting an alternative method to judge the fault side, and after the fault of the antenna side is judged, the GPS antenna and the LAN amplifier do not need to be replaced simultaneously, so that the cost is saved; the situation that which antenna is arranged on the roof cannot be clearly distinguished when the GPRS of the motor train unit fails and the antenna needs to be replaced is avoided, and labor and fault processing time are saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic circuit diagram of the present invention;

FIG. 2 is a circuit diagram of a low ripple power supply module;

fig. 3 is a circuit diagram of a lithium battery charging module;

FIG. 4 is a circuit diagram of a GSM-R radio frequency signal module;

FIG. 5 is a circuit diagram of a GSM-R radio frequency control module;

FIG. 6 is a circuit diagram of a GPS detection module;

fig. 7 is a circuit diagram of a battery level display.

Description of reference numerals:

1. a GSM-R radio frequency signal module; 2. a GSM-R radio frequency control module; 3. a battery power display; 4. a lithium battery charging module; 5. a low ripple power supply module; 6. a GPS detection module; 7. 4-bit half ammeter; 8. a radio frequency biaser.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The technical scheme adopted by the specific implementation mode is as follows: referring to fig. 1, it comprises a GSM-R radio frequency signal module 1, a GSM-R radio frequency control module 2, a GPS detection module 6, a 4-bit half current meter 7, a radio frequency bias 8 and an LNA current detection module; the LNA current detection module is electrically connected with the GSM-R radio frequency control module 2 and the GPS detection module 6 respectively; the LNA current detection module comprises a low-ripple power supply module 5, a battery power display 3, a lithium battery and a lithium battery charging module 4; the low-ripple power module 5, the lithium battery and the battery electric quantity display 3 are connected in series, and the lithium battery charging module 4 is electrically connected with the lithium battery and provides electric power support for the lithium battery; the GSM-R radio frequency control module 1 is in control connection with the GSM-R radio frequency signal module 2; the GSM-R radio frequency signal module 1 is electrically connected with the GSM-R radio frequency interface; the GPS detection module 6 is electrically connected with the radio frequency biaser 8; the 4-bit semi-ammeter 7 is connected in series between the GPS detection module 6 and the radio frequency bias device 8; the radio frequency bias device 8 is electrically connected with the GPS radio frequency interface.

It also comprises a GPS power switch and a GSM-R power switch; the GPS power switch is used for controlling the opening or closing of the GSM-R radio frequency; the GSM-R power switch is used for controlling the opening or closing of the GPS detection.

In this embodiment, the GSM-R radio frequency signal module 1 is a wireless data transmission module with a model number of WSN-31, and it uses a CC1101 wireless transceiver, and the specific circuit is shown in fig. 4;

the GSM-R radio frequency control module 2 adopts an ATMEGA328P-AU integrated chip, and a specific circuit is shown in figure 5;

the GPS detection module 6 adopts a UM220-IV chip, and a specific circuit is shown in figure 6;

the 4-bit semi-ammeter 7 adopts a direct current ammeter, and the measuring range is 0-500 mA;

the radio frequency bias device 8 is provided with three ports, namely a radio frequency port, a direct current bias port, a radio frequency port and a direct current port;

the low-ripple power supply module 5 adopts an MT3608 step converter, and the specific circuit is shown in FIG. 2;

the lithium battery charging module 4 adopts a TP4056 lithium battery management chip, and a specific circuit is shown in FIG. 3;

the battery electric quantity display 3 adopts a 3.7V-4.2V lithium battery electric quantity display board which adopts a YB6029 lithium battery charging chip, and a specific circuit is shown in a figure 7.

The specific principle of the embodiment is as follows:

1. a GSM-R switch is turned on, one path of 5V direct current power supply on the LNA current detection module drives a GSM-R radio frequency control module 2, a radio frequency control signal is transmitted to a GSM-R radio frequency signal module 1, and the GSM-R radio frequency signal module is connected with a vehicle-mounted GSM-R antenna through a GSM-R radio frequency interface;

2. opening the handheld radio frequency directional detector to test the working state and the corresponding installation position of the GSM-R antenna;

3. turning on a GPS switch, driving a GPS detection module 6 by another 5V direct current power supply on the LNA current detection module so as to drive a 4-bit half ammeter 7, driving a radio frequency bias device 8, and connecting a vehicle-mounted LNA and a GPS antenna through a GPS radio frequency interface;

4. the test results were as follows:

a. judging the working state of the vehicle-mounted antenna of the motor train unit by testing the strength of the GSM-R radio frequency signal, and judging the mounting position of the vehicle-mounted GSM-R antenna of the motor train unit by directional testing;

b. whether LNA and antenna are damaged or not is judged by testing the working current of GPS antenna and vehicle-mounted LNA of the motor train unit.

After the technical scheme is adopted, the utility model discloses beneficial effect does: a EMUs vehicle antenna diagnostic instrument convenient to carry, can test out vehicle antenna and vehicle host's fault point fast and conveniently find the specialized tool of fault antenna, can be the on-vehicle LNA test analog current of EMUs, audio-visual demonstration operating current, can directly be to EMUs GSM-R in the in-service use of actual field, GPS, LNA tests, need not to replace outside host computer, the time of having practiced thrift EMUs vehicle-mounted train control system's fault diagnosis among the daily work and having shortened newly-built EMUs vehicle-mounted train control system and having accepted the cycle, the time and the labour of field failure processing have significantly reduced, and have simple structure, the cost of manufacture is low, advantages such as convenient to use.

The above description is only for the purpose of illustrating the technical solutions of the present invention, and is not intended to limit other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention, so long as they do not depart from the spirit and scope of the technical solutions of the present invention, they should be covered in the scope of the claims of the present invention.

Claims

The LY-I type motor train unit vehicle-mounted antenna diagnostic device is characterized by comprising a GSM-R radio frequency signal module, a GSM-R radio frequency control module, a GPS detection module, a 4-bit semi-ammeter, a radio frequency bias device and an LNA current detection module; the LNA current detection module is electrically connected with the GSM-R radio frequency control module and the GPS detection module respectively; the GSM-R radio frequency control module is in control connection with the GSM-R radio frequency signal module; the GSM-R radio frequency signal module is electrically connected with the GSM-R radio frequency interface; the GPS detection module is electrically connected with the radio frequency biaser; the 4-bit semi-ammeter is connected in series between the GPS detection module and the radio frequency biaser; the radio frequency bias device is electrically connected with the GPS radio frequency interface.
2. The LY-I motor train unit vehicle-mounted antenna diagnostic apparatus according to claim 1, wherein the LNA current detection module comprises a low-ripple power supply module, a battery level display, a lithium battery and a lithium battery charging module; the low ripple power module, the lithium battery and the battery power display are connected in series, and the lithium battery charging module is electrically connected with the lithium battery.
3. The LY-I motor train unit vehicle-mounted antenna diagnostic apparatus according to claim 1, further comprising a GPS power switch and a GSM-R power switch; the GPS power switch is used for controlling the opening or closing of the GSM-R radio frequency; the GSM-R power switch is used for controlling the opening or closing of the GPS detection.